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4 posts
The sqlx::test attribute creates a fresh database for each test, runs your migrations, hands you a pool and drops it afterwards. Learn fixtures, the DATABASE_URL requirement, parallelism and common errors.
Keep logic in a no_std library, put hardware behind embedded-hal traits, and run the library tests on your computer. Use fakes for pins and buses, and reserve on-device tests for what only hardware can show.
Test an Axum router without opening a port: build a Request, call oneshot, read the body and assert on status and JSON. Includes the setup for shared state.
A guide to testing Rust code: unit tests beside the code, integration tests in tests, doc tests, property tests, snapshots, mocks, async tests and the commands to run them.